SAT Math Practice Question #23162 - SATify | SATify

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SAT Math Practice Question #23162 - SATify | SATify

#23162

parity

number theory

medium

90 sec

If $k$ is an integer and $k^{2}$ is even, which of the following must be true?

A.

$k$ is odd

B.

$k + 1$ is even

C.

$k^{2} + 1$ is odd

D.

$k - 2$ is odd

E.

$3 k$ is odd